JAM Engineering Kits?? M110

[Hit Man X]

Well I am about to throw this Solex at my neighbor's cat, has anyone used their kits with success with the simple Holley carb?

[bwostosh]

I am looking to put a carburated M110 into the 250SEc W111, have to because the Fuel Injection manifold will interfere with the steering box.

I have had total luck with that Solex, they are carburetor works of art compared to anything out of Detroit (I was born there). The metal, tooling, casting, machining, is superior, and can be made to functional perfect.
I've rebuilt these and older American types.

[t walgamuth]

aaah, but have you actually rebuilt it yet?

most folks (myself included) have had poor luck with them.

Tom W

[Mike D]

I've got one of the JAM Holley kits on my '73 M110. Works great. Their electric choke fits and I can use the stock air cleaner. Linkage all fits.

I've also used an Autolite 2 BBL, a Rochester Quadrajet and a 2 BBL Carter. Solexes are good carbs but usually by the time we get the car they have been abused past the point of recovery.

[t walgamuth]

IIRC on mine the top of the solex carb would warp and cause internal pressure leaks (or vacuum leaks).

If I had one with the four barrell I would think about the edelbrock q-jet replacement.

Tom W

[todds]

It strikes me as odd that nobody has a sidedraught manifold for the m110. Being a crossflow it begs for it. Triple webers?? Some big ole SU's might me nice... I guess the answer is that the throttle linkage and custom manifold would be way more work than it is worth in light of the factory FI and it probably wouldn't fit. Plus the choke arrangements are annoying and then there is the air cleaner.

The downdraught carbs are a drop in no-brainer.

It would be a beautiful thing though. I bet it could reach 200hp.

[Hit Man X]

Originally Posted by todds

It would be a beautiful thing though. I bet it could reach 200hp.

It's already 188hp, so 12hp for that hassle is not worth it. If anything I'd build a header and so some head work.

[todds]

True.. but isn't that the later K-jet version? I thought the early carbed US models were around 160 or even lower. Functionally, what I said doesn't make much sense, unless you add cams and headers/etc. I was just waxing philosophical about the m110 having what seems to be a lot of untapped potential. It seems like the v8's just overshadowed the sixes of that era.

[Hit Man X]

Originally Posted by todds

True.. but isn't that the later K-jet version? I thought the early carbed US models were around 160 or even lower. Functionally, what I said doesn't make much sense, unless you add cams and headers/etc. I was just waxing philosophical about the m110 having what seems to be a lot of untapped potential. It seems like the v8's just overshadowed the sixes of that era.

W116 280S is Euro in 79. 79s W116 in US had the 280SE only.



Yes, the M110 is a fantastic motor.

[JMURiz]

Originally Posted by todds

It strikes me as odd that nobody has a sidedraught manifold for the m110. Being a crossflow it begs for it. Triple webers?? Some big ole SU's might me nice... I guess the answer is that the throttle linkage and custom manifold would be way more work than it is worth in light of the factory FI and it probably wouldn't fit. Plus the choke arrangements are annoying and then there is the air cleaner.

The downdraught carbs are a drop in no-brainer.

It would be a beautiful thing though. I bet it could reach 200hp.

I was thinking the same thing, or even better...
Seeing throttle bodies like this for the BMW motors, why not for the M110? I'd think running this with SDS controler running the show would be sweet...then again we'd probably need a hotter cam and tuned exhaust to really make it cook.
Now that'd be way better than dropping a new 4 barrel on mine...and AFAIK the 4 barrel carb'd M110 were some 160HP, only the cool FI ones had more HP.




edit: I just remembered the guy that does such mods for cars like my 914 likes the Jenvey brand TBs.

[Hit Man X]

Eh, it's cheaper to go EFI than to use the JAM kits. Now if I can find out how much pressure and volume that stock mechanical pump supports.

I need (hope) it is 9-13psi.

My chum just dropped a Gen III GM 5.3 into his old K5 Blazer that was equipped with a TBI setup. Yes, I'm aware the 350 TBI is too large, but the 4.3 one is nearly perfect in terms of CFM flow. Remember that's a lower reving 4.3 and we have a high RPM 2.8, so it's about right on considering the VE is higher with the 2.8 (better motor).

Anyway, I'm going to get his old TBI harness and do some investigating.

Need to figure out the fuel pressure/volume. Then how the distributor/timing advance works.



I figure between a rebuilt TBI head, custom chip, and a fuel pump I'll be in the $400-600 range with more power, better reliability, and more fuel economy than the carb AND even the CIS system.

[Mike D]

The mechanical pump won't work. You need 15 to 25 p.s.i. to push the TBI. Best bet is to use a "surge tank" supplied by a separate electronic fuel pump. Check the off-roader sites for their creations.

I'm 80% done with my TBI conversion on my '74 280C restoration. When I quit finding more stuff to fix I'll get back to the TBI pictorial.

I've got the Megasquirt built, the TBI and adapter manufactured (TBI from a '90 GM 2.5L), the surge tank prepped but not plumbed and all the sensors located but not installed.

I had to gut the interior due to a packrat infestation and it's slowly going back together. sigh!

[Hit Man X]

Ahh, found on the distributor I need a magnetic pickup in there... thoughts on how to achieve that?

[JMURiz]

Mike D, I almost forgot about your TBI project. But I know how it is getting bogged down with other projects. Maybe you'll be able to lead the way for all of us once it's finished and sorted.